Seam forming and staying machine



July. 21, 1931. 1 1,815,325

SEAN FORMING AND STAYING MACHINE Filed Dec. 31, 1928 2 Sheets-Sheet lINV EN TOR. George 6'. Per/rims;

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July 21 1931. a. G. PERKINS SEAM FORMING AND STAYING MACHINE Filed Dec.51, 1928 2 Sheets-Sheet 2 INVENTOR.

George G. Perkins,

A TTORNEY.

Patented July 21, 1931 UNITED STATES PATENT GFFHIE GEORGE G. PERKINS, OFLYNN, MASSACHUSETTS SEAM FORMING AND STAYING MACHINE The inventionrelates to improvements in seam forming and staying machines andconsists of a device for pressing out a seam such as is used on theheels of shoes and projects from being irritated by it. Simultaneouslywith pressing out the seam it is covered with adhesive tape to stay itin position thereby making the seam as smooth and fiat as possible underuneven conditions.

The invention further consists of a rolling device having a radialpressure roll on a direct radial line with the cooperating forming rollbetween which the forming and staying operations are made.

The invention further consists of a pres sure roll which willautomatically adjust itself to the varyingthicknesses of the leather andseam and automatically lay on a. suitable adhesive tape evenly andsecurely on the seam and the surfaces on each side of the seam.

The object of the invention is to provide a seam forming and stayingmachine by pressing down the seam as much as possible, then laying on astrip of adhesive tape and rolling it down evenly and accurately underthe varying conditions and surfaces.

Referring to the figures, Fig. l is a side elevation of the seam formingand staying machine;

Fig. 2 is a front elevation of the same;

Fig. 3 is a side elevation of the seam forming and staying roll with anadjustable tape guide in position;

Fig. 4 is a fragmentary view showing an adjustable limiting stop for thepressure roll;

Fig. 5 is a side elevation of the seam forming and staying roll with thematerial support in position and the tape extending over the material; 7r

Fig. 6 is a front'elevation of the same;

Fig. 7 is a cross section of the forming and pressure roll incooperative relation with the radial devices;

Fig. 8 is a side elevation of the same;

Fig. 9 shows the material having a seam to be operated upon i Fig. 10shows the material located on the supporting device;

inwardly to prevent the wearer of the shoe v Fig. 11 shows a part of theforming roll and the pressure roll in elevation with the material andtape in position as it passes between the rolls;

Fig. 12 is an enlarged view of the seamed material with the tape inposition and rolled down before the material is turned over;

Fig. 13 shows the material and the tape rolled down and turned over intoposition for use; and

Fig. 14 shows a plurality of pieces of seamed material as they are tapedand run off the machine connected by the tape after which it is cut andthe pieces separated.

Referring to the drawings, 10 indicates a frame for supporting theimproved seam forming and staying device consisting of a radial flexibleroll A, a rigid forming roll B and a tape roll C operated by the drivingwheel 11, which receives its power from any suitable source. The wheel11 drives the shaft 12, pinion gear 13, gear 14, shaft 15, and theforming roll B from which the other members receive their variousmovements. The gears form a suitable speed reducing device adapted forthe most efficient speed required to operate the devices.

Mounted in the frame 10 is a shaft 16 having a lever 17 at one end andheld downwardly by the spring 18. The opposite end of the shaft extendsthrough the machine and is adapted to support the U-shaped frame 19,-the opposite end of which supports the pressure roll A.

Secured to the frame 19 is a pin 20 to which is anchored a spring 21,the opposite end of which is secured to the pin 22, secured to the frame10. The springs 18 and 19 pull from opposite directions, but at the sametime they constantly pull the U-shaped frame upwardly. These two springsare merely to increase the pressure between the operating rolls on thematerial passing through.

The pressure roll frame 19 is provided with a stop lever extension 28formed at right angles and integral with the frame. The ex tension 23 isthe pivotal point of the lever 19 as it swings on the shaft 16 and islimited in its upward movement by an adjustable stop 24. The stop limitsthe upward movement of til) the pressure roll A to prevent the adhesivetape from sticking to the rotating roll when no material is passingthrough. That is, when there is no operation taking place, there issufficient space between the rolls to allow the tape to hang loosebetween them. This distance can be adjusted by the nut being releasedand the screw 26 turned to suit the conditions and then locked again bythe nut.

Located on the opposite end of the U- shaped lever 19 is a shaft 27 onwhich is free to turn the pressure roll A. The pressure roll A is madein three parts indicated by the numerals 28, 29 and 30. The middle part28 is free to turn on the shaft 27, but has no radial movement. The twoside members 29 and 30 of the said pressure roll A are also free torotate on the shaft 27, but have sufficient clearance between the shaft27 and the hubs 31 and 32 of the members 29 and 30 and the centermembers 28 to allow the members 29 and 30 to move radially in apredetermined time and position.

The predetermined radial movement of the members 29 and 30 is obtainedby suitable plungers 33 and 3a located and free to more radially in therigid shaft 27 against the members 29 and 30 by the springs 35 and 36 Toobtain this definite upward thrust of the plungers 33 and 3A astationary shaft is provided. Slots 3? and 38 are formed in the shaft inthe direction of the radial thrust required and the plungers are thenset in position. Clearances 39 and -10 are provided which permits themembers 29 and 30 of the roll A to move upwardly atall times in thedirection of the thrust towards the forming roll. The portion ll of thecenter member of the roll A presses down the seam as it enters theannular depression 42 of the forming roll B. The seamed material and thetape pass through the rolls A and B and and are pressed downwardly whilethe portions l3 and A l extend by the seam and press the tape inposition on the lower surfaces. By this construction an even pressure isobtained on uneven surfaces constantly and at all times when the work ispassing through the rolls.

The roll B is the forming roll and takes the pressure thrust from theroll A to press down the seam and place the tape in positionsimultaneously. A ro l of tape D provided which allows the work to becarried on continuously. The tape roll C rotates on the shaft 45 betweenthe supporting disks. The shaft is supported on the arm fi secured tothe frame 10. The tape D passes down through the swinging guide A? andbetween the rolls A and B. Secured to the guide 4-7 is a material guideA8 having a depression 49 for receiving the material. The material Epasses into the depression 49 which is in direct line with the materialsupporting member 50 and guides the material through its variousoperations. The material support 50 is secured to the arm 19 and moveswith it at all times. The guides 47 and l8 are fastened to the arm 51which is pivoted at 52 to the frame 10.

The arm and the guides are constantly pulled downwardly by the spring 53which is anchored at one end to the arm 51 and the opposite end isanchored to the frame 10. This construction allows the guide members toadjust themselves to the varying conditions of the operations of thematerial passing between the rolls A and B.

In operation the material E is fastened together by a threaded seamwhich must be pressed down and stayed bythe machine before is can beused. The material E is placed on the support 50 and passes through theslot 49 and in turn between the rolls A and B: Simultaneously with thisfeeding .iovementthe tape is fed down by the rotation of the roll B andcaused to pass through. The surface 41 of the member 28 presses down theseam and the side rolls 29 and 30 extend beyond the central member andforce the tape down on the seam and stick it down over the sides of anuneven surface whichconstitutes the main embodiment of my invention. Theclearance between the members of the roll A permit a radial pres- 1 sureat apredetermined time to obtain a maximum pressure at the point wherethe rolls meet, and this is accomplished by the device hereinbeforedescribed.

It will be seen in Fig. 9 that the material is sewed together leaving aprojection above the seam which must be pressed down before it can beused. In Fig. 10 the material is placed on the support 50 preparatory tobeing fed into the machine, as shown in Fig. 11. In Fig. 13 is shown thematerial pressed and then turned over to be used. The operations arecontinuous as long as the tape lasts, and all the members are connectedtogether by the tape, and then cut apart.

What I claim as new and desire to secure by Letters Patent of the UnitedStates is:

1. A seam pressing and staying device comprising a forming rollrotatably driven from a suitable source of power, a staying tape fedfrom a roll secured to the frame of the machine, a support for theseamed material, a shaft supported on a U-shaped frame, a central rollloosely mounted on a shaft for pressing down the seam, flexible.

side rolls also mounted on the shaft with sufficient clearance inrelation to the adjacent members for pressing down the tape on bothsides of the seam, a spring for putting the roll under pressure, anadjustable stop in the frame of the machine in relation to the form ingroll to prevent the tape from being carried along with the rotation ofthe said forming roll, a swinging arm, and a guide on the arm fordirecting the tape.

ies

L1 is 2. In a machine for pressing and staying seams of material such asshoe uppers, having a rotating forming roll, a main frame for supportingthe forming roll, a pressure roll, a frame for supporting the pressureroll pivotally secured to the main frame, a staying tape supply, asupport for the seamed material and means in relation to the saidpressure roll for placing and staying the tape over an uneven surface.

3. In a machine for pressing and staying seams of material such as shoeuppers, having a rotating forming roll, a main frame for supporting theforming roll, a pressure roll, frame for supporting the pressure rollpivotally secured to the main frame, a staying tape supply, a supportfor the seamed material, a ri id shaft supported by the pressure rollframe, a central r-oll disk mounted on and free to rotate in the rigidshaft, annular shoulders cut on both sides of the roll, side disksforming part of the pressure roll located on both sides of the centralroll, and means in relations to the three roll members for placing andstaying the tape over uneven surfaces.

4. In a machine for pressing and staying seams of material such as shoeuppers, having a rotating forming roll, a main frame for supporting theforming roll, a pressure a roll, a frame for supporting the pressureroll pivotally secured to the main frame, a staying tape supply, asupport for the seamed material, a rigid shaft supported by the pressureroll frame, a central roll disk mounted on and free to rotate in therigid shaft, annular shoulders cut on both sides of the roll, side disksforming part of the pressure roll located on both sides of the centralroll, in eccentric relation to the rigid shaft, annular depressions cutin the side disks of larger diameter than the shoulders cut on thecentral roll and means in relations to the side disks and the stationaryshaft for maintaining a constant excentricity between the shoulders onthe central disk and the depressions in the side disks for placing andstaying the tape over an uneven surface.

5. In a machine for pressing and staying seams of material such as shoeuppers, having a rotating forming roll, a main frame for supporting theforming roll, a pressure roll, a frame for supporting the pressure rollpivotally secured to the main frame, a staying tape supply, a supportfor the seamed material, a rigid shaft supported by the pressure rollframe, a central roll disk mounted on and free to rotate in the rigidshaft, annular shoulders cut onboth sides of the roll, side disksforming part of the pressure roll located on both sides of the centralroll, in excentric relation to the rigid shaft, annular depressions outin the side disks of larger diameter than the shoulders cut on thecentral roll, slots cut in the stationary shaft, springs 10- cated inthese slots, movable caps located between the springs and the innersurface of the hub of the side disks for maintaining a constantexcentricity between the members for causing a constant predeterminedthrust in line with the pressure so the uneven surfaces on the pressurerolls will cooperate with the uneven surfaces of the forming roll forplacing and staying tape over uneven surfaces.

6. In a machine for pressing and staying seams of material such as shoeuppers, having a rotating forming roll, a main frame for supporting theforming roll, a pressure roll, a secondary frame for supporting thepressure roll pivotally secured to the main frame, a staying tapesupply, a support for the seamed material and means for adjusting theframe to determine the working relation between the pressure and formingrolls.

7 In a machine for pressing and staying seams .of material such as shoeuppers, having a rotating forming roll, a main frame for supporting theforming roll, a pressure roll, a secondary frame for supporting thepressure roll pivotally secured to the main frame, a staying tapesupply, a support for the seamed material, a crank arm integral with thesecondary frame, arm adjustable stop in relation to the crank arm of theframe to determine the working relation between the pressure and formingrolls.

GEORGE G. PERKINS.

